Spinning-spindle.



C. H. CHAPMANl SPINNING SPINDLE.

APPLICATION FILED JAN.5, 1910,

i., v Patented 0@t.14,1913.

' To all whom t may concern MAN, a. citizen of the United States,

l bobbinoff the spindle.

'EEE n g PATEN CHRLES H. CHAPMAN, or wrNcHEsrnn,

MASSACHUSETTS, ASSIGNOR TO CHAPVIPN j or MAINE Application le. January5, 1910.

H. Gnarresiding at Winchester, in the,l county of Middlesex and State ofMassachusetts, have invented a certain new and useful Improvement inSpinning-spindles, of which the following is a full, clear, and exactdescription.

The object of this invention is to provide a bobbin-holder and awhirl-base and whirl for spinning spindles, of such character that inapplying them to the spindle, and in use, the spindle will not be sprungout of equilibrium and perfect alinement.

In spinning spindles now in general use, an upwardly and outwardlyharing cup, forming a part of the whirl or whirl-base, is made toreceive and hold by frictional contact the lower and externally taperedendof the bobbing and inasmuch as the bobbins are not perfectly true,and are subject to change incident to use and barometric andthermometricvariations, and it is impossible in practice to prevent them fromgetting out of true, it follows that when such an imperfect bobbin isforced on to the spindle, the spindle is sprung out of erfectAalinement, thereby causing .the spindle to take on a vibratory motion,which vBef it known that 1, CHARLES tends to lower the .speed of thespindle and produce slack yarn, even though the bobb-in is forced downand into the frictional tapered cupi with suflicient force to prevent itfrom working loose, and when so forced onto the spindle it makes it veryhard to pull the The cup-shaped construction tends to' cramp the spindleout. of perfect alinement, resulting, as before stated, in causing thespindle to take on a vibratory motion, detrimental to the life of thespindle and the quality of the yarn spun.

One important feature of the present inhollow whirl-base, havventionconsists 1n a ing a cylindrical extension internally coun-v terbored soas to have only a small or short direct contact with the spindle, Aand a.whirl fitted in said whirl-base, with a disk interposed and Aforciblyfitted to the spindle some distance below the plane of'contact of thecylindrical extension of the whirl-base with the spindle, sothat, inconnection withthe bobbin-holder, all possibility of the spindleSpecification of Letters Patent.

tical plane SPINNING-SPINDLE.

Patented Cet. 14, 1913.

serial No. 536,565.

v blade being sprung ont of perfect alinement is overcome.

n the accompanying drawings, illustrating the invention, in the severalfigures of which like partsare similarly designated, Figure l is allongitudinal sect-ion, the spindle being in elevation, and the spindleand bobbin broken out. Fig. 2 isa plan view of the disk. Fig. 8 is anelevation of Athe bobbin-holder. Fig. a is a bottom plan view of thebobbin-holder.

The spindle l, may be of any desired co-nstruct-ion, and in any of thewell-known spindle supports. The bobbin Q, is constructed wardlytapered4 hole at its upper end to fit the cylindrical portion 3 of thespindle l, with an easy slip fit, and said bobbin has no other directcontact with the' spindle. T he lower end of the bobbin 2 iscounterbored at a on an arc of a circle described in a verto lit thebobbin-holder 5. One form of bobbin-holder which may be used inconnection with the present invention, is composed of the cylindricalportion G, and spring portions 7, which terminate in a hollow sphericalsegment 8, coiniiilemental to and forming a seat for the arcual portionl of the bolil'; he spring portions 7 are shown as four number, althoughany desired number may be pro-vided, and they are formed by slitting thebody 0f the bobbinholder longitudinally, as shown at 9. rlfhis segmentalportion 8 of the bobbin-holder and the arcual portion t of a sort ofball or universal joint for indirectly connecting the bobbin at thatpoint with the spindle. The bobbin-holder approximates a bell in shape,and the spring port-ions 7 partake of the curvature of the body so as toinsure the necessary rigidity or resistance. The cylindrical portion 6is of Sutlicient length to' hold the segmental portion concentric withthe spindle, and its wall is thin so as to prevent any possibility ofIspringing the spindle blade when said cylindrical portion is forced downuponthe spindle. The` cylindrical portion is the only part of thebobbinholder that comes into contact with the spindle. x

The whirl-base 10 is hollow, and provided with a cylindrical extension11, counterbored from the bottom lupwardly so as to leave with an upthebobbin forni .65 is adapted to fit and rotate into the whirl-base.

It is to be noted that the bobbin-holder and whirl-base are out ofcontact with one another; and that'the extent of contact of thewhirl-base cwith the spindle by means of its portion 12 and disk 13 isso short longitudinally, and these two planes of contact are so spacedapart, that the whirl-base and Whirl are held firmly on the spindle andconcentrically with it and there is overcome any possibility 'ofspringing the spindle blade out of perfect alinement, thereby obviatingthey necessity of straightening the spindle blade after pressing on thewhirlbase. With the ordinary whirl-base, the walls of the shank are muchthicker than the walls of the shank of my whirl-base, and they take alongitudinal bearing on the spindleblade of. much greater length thanmine. With a whirl-base constructed with the walls of its shank thickand taking, a bearing of greater length on the spindle blade, anyimperfections in the hole of the shank of the whirl-base, or of thatpart of the spindle blade taking bearing contact in the hole of theshank, tend to and will throw the spindle blade out of perfectalinement, necessitating the straightening of thelspindle blade afterthe whirlfbase is forced on to the spindle; and it is tobe rememberedthat the term straightening, as herein applied, simply means equalizingand balancing what is and still remains an imperfect spindle blade.

The segmentalseat 8 of the bobbin-holder yields to the downward pressureof the bobbin and readily enters the lower end of the bobbin andlsprings out into' contact with the walls of the arcual portion 4;thereof. The tension of the spring portions 7 is such as to permit thebobbin to be readily pulled oli' of the spindle, and yet it issuliicient to portion 12, whereby it` yany direction, to

to rotate with the spindle, while preventing it from rising from itsseat by' reason of any vibratory motion of the spindle. It will bereadily seen that with this spring bobbin-holder engaging the lower of aybobbin which has at its upper end a loose slip lit with the spindle,the upper end of the bobbin could be moved laterally in a limited extentwithout cramping the spindle blade, and this lateral cause the bobbinfreedom of the. bobbin prevents the possibility of the'spindle bladebeing sprung out of its perfect equilibrium.

The disk may be dispensed lwith and the hole through the whirl-basecounterbored to it the spindle at each end of thehole, sub-v stantiallythe same as when but as a matter of economy, of the disk.

lVhat I claim is 1. A spindle, a whirl-base having its shank. or upperportion counterbored and a vchamber in its lower end, and a disk andwhirl arranged in said chamber, said whirlbase adapted to be securelyattached to the spindle by the upper end of its shank and the disk.

2. A spindle, a whirl-base having its shank counterbored and a disk atthe lower end of said counterbore, said .whirl-base securely attached tothe spindle by the upper end of its shank and the said disk, combinedwith a bobbin-holder, securely' attached to the spindle above thewhirl-base and sleeving the counterbored shank of the Whirl-base andadapted to engage the lower end of a bobbin.

3. A spindle, a whirl-base constructed with two spindle-engagingelements to fit the spindle at two points, one of which is above and theother below the bottom rest for the bobbin and out of Contact with thespindle between said points.

In testimony whereof I have hereunto set my hand this 28th day ofDecember, A. D. 1909.

the disk is used; I prefer the use CHARLES I-I. CHAPMAN.

